/
CacheInterceptor.java
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/
CacheInterceptor.java
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.tomitribe.jcache.examples.interceptor;
import com.tomitribe.jcache.examples.qualifiers.ObjectCache;
import javax.cache.Cache;
import javax.inject.Inject;
import javax.interceptor.AroundInvoke;
import javax.interceptor.InvocationContext;
public class CacheInterceptor {
@Inject
@ObjectCache
private Cache<String, Object> cache;
@AroundInvoke
public Object cache(final InvocationContext ctx) throws Exception {
final Object[] parameters = ctx.getParameters();
final String key = parameters[0].toString();
Object o = cache.get(key);
if (null == o) {
o = ctx.proceed();
cache.put(key, o);
}
return o;
}
}